1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea15129d2a065e8974d4ab43fbf7dd8bd799e187b4976e627558adf7f15ed50. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33256e5d-39b8-4cdd-95ee-abbae6897952.json and https://artists.proofprofile.net/proofs/artist/33256e5d-39b8-4cdd-95ee-abbae6897952.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chỉ Có Riêng Em (Tình Khúc Phạm Khải Tuấn)
Tình Khúc Phạm Khải Tuấn - Chỉ Có Riêng Em
Nhật Trường - Trần Thiện Thanh 2 (ASIA 61)
Nhật Trường - Trần Thiện Thanh: Anh không chết đâu anh (ASIA 50)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2289a669527136912b3e9fff44c8774ac9d02818f134fca0e0af99cd693ca44a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1803792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd957b960bd9a02131bce6282fb8882b1b3556fe20f5deef90adeca35eace2e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGCD1803340.